September weather forecast
Lakeland, FL

The city of Lakeland witnesses the gradual farewell to summer during September. Major shifts in the weather pattern start to unfold with the decline in maximum temperatures, heralding the onset of cooler months. With the retreat of summer's peak, the rainfall also begins to subside, and a welcoming decline on the UV index takes place. Despite these changes, the daily daylight duration remains largely constant, enabling numerous activities. The transition into October's weather is smooth, with adjustments to the fluctuating conditions.

Temperature

The transition from August to September sees an average high-temperature of a still tropical 88.2°F (31.2°C), indicating a minor variance from the prior month. Lakeland witnesses a consistent average low-temperature of 73.4°F (23°C) throughout September.

Heat index

For most parts of September, the heat index is computed to be a blistering 105.8°F (41°C). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
When assessing, remember that heat index measurements are for light winds and shaded spots. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', gives a temperature feeling by integrating air temperature and humidity. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

The months with the highest humidity in Lakeland are July through September, with an average relative humidity of 79%.

Rainfall

In Lakeland, in September, it is raining for 14.3 days, with typically 0.67" (17mm) of accumulated precipitation. Throughout the year, in Lakeland, Florida, there are 120.1 rainfall days, and 9.06" (230mm) of precipitation is accumulated.

Daylight

The average length of the day in September in Lakeland is 12h and 19min.
On the first day of September in Lakeland, Florida, sunrise is at 7:06 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:14 pm EDT.

Sunshine

In September, the average sunshine is 8.7h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Lakeland. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 7 during September translates into these guidelines:
Deflect overexposure. Sun protection is a necessity. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.